1
- in or to a foreign country or countries在国外, 到国外：
we usually go abroad for a week in May
我们通常5月份出国一周
competition from companies at home and abroad.
来自国内外各公司的竞争。
1.1
- dated or humorous out of doors〈旧或幽默〉在室外, 到室外：
few people ventured abroad from their warm houses.
很少有人敢于走出温暖的家门。
2
- in different directions; over a wide area向四方; 广泛地：
millions of seeds are annually scattered abroad.
每年有数百万的种子被播撒到各处。
2.1
- (of a feeling or rumour) widely current（情绪, 谣言）盛行：
there is a new buccaneering spirit abroad.
一种新的冒险精神在盛行。
2.2
- freely moving about行动自由：
hospital inmates abroad on the streets of the town.
在城市街道上四处行走的住院病人。
3
- archaic wide of the mark; in error〈古〉未击中目标; 出错。
词源
Middle English: from A-2 'on' + BROAD.